Gai (Orenburg Region)
PJSC Gaysky GOK celebrated its 60th anniversary and Miner's Day by putting into pilot operation one of the most significant facilities of recent years. Today the main ventilation unit of the new mine shaft "Severnaya Ventilatsionnaya 2" with a capacity of 600 cubic meters of air per second was solemnly launched. With its help, the horizons located below the mark of 990 meters will be ventilated.
The horizons of the underground mine go deeper and deeper, and in order to support them, improve the working conditions of the underground mine workers and mine construction management, it is necessary to increase the capacity for air supply and ventilation.
Acting Governor of the Orenburg Region Denis Pasler has launched new production facilities by joint pressing of a symbolic button and General Director of the Ural Mining and Metallurgical Company Andrey Kozitsyn.
- This year costs associated with capital construction The benefits at Gaysky GOK amount to about 6 billion rubles - for the first time in the history of the enterprise such significant investments, - noted the General Director of UMMC Andrey Kozitsyn. - On the surface, we see only a fan installation, this is only a small part, the entire basic infrastructure is hidden underground. This facility is the result of the tremendous intellectual work of our miners, who are busy with their serious business all year round. Low bow and gratitude to them!
At the end of 2016, MGOK started sinking the mine shaft "Northern Ventilation 2". The work was carried out in difficult geological conditions. The mine builders dropped to the mark of 1285 meters. The average penetration rate was 35 running meters per month, about 51.5 thousand cubic meters of rock mass were raised to the surface.
The miners have made conjugations (connections) with three horizons of the underground mine - at elevations of 1075, 1230 and 1310 meters. In parallel with the tunneling works, the shaft with a diameter of 8.1 meters was reinforced with a layer of concrete. The final stage of the construction of the shaft of the Severnaya Ventilyatsionnaya 2 mine was its connection with the ventilation duct of the main ventilation unit.
- This is how we combined the two components of the mine - surface and underground structures into one, - said the chief engineer of PJSC Gaysky GOK "Nikolay Efimov. - A stream of exhaust air from the mine will move along the shaft and ventilation duct. The commissioning of the North Ventilation 2 mine (the third in the number of ventilation shafts) is an important production task for all of us.
The building of the ventilation unit was erected next to the mine headframe. Its foundation is based on 424 bored piles that go to a depth of 21 meters. The concrete for them was made at the site of the repair and construction site of the GOK. Grillages are installed on the pile field - a reinforcing cage for the foundation of the building. This is done in order to provide an industrial facility with a solid, stable and durable base.
A diffuser extends from the shaft - an expanding channel for air flow. Longitudinal concrete partitions divide it into two channels, each of which, in turn, is divided into two more - the suction and discharge channels of the main ventilation unit. Air from the mine will move along them. The main ventilation unit impeller diameter is 4.7 meters.
With input the commissioning of the new ventilation shaft, the amount of air supplied to the horizons will increase by one and a half.
Another significant event today was the solemn ceremony of launching the shaft of the "Operational" mine , the reconstruction of which lasted from 2011.
